* [travis-ci] debugging ci failures on travis
* [travis-ci] Use JSON to encode env vars
* [travis-ci] Use a more broadly compatible before_all command
* Drop CIBW_ENABLE=all on Travis windows
It doesn't fit into the time limit
* [travis-ci] try upgrading certifi to get around SSL errors
* Revert "[travis-ci] try upgrading certifi to get around SSL errors"
This reverts commit 02eee0e1946d2116d1ce23ccd86945ad33d1ae24.
* [travis-ci] upgrade windows certificates
* [travis-ci] re-enable linux builds
* Drop CIBW_ENABLE=all on Travis Linux
It doesn't fit into the time limit
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Co-authored-by: mayeut <mayeut@users.noreply.github.com>
